
<html>
<head>
    <title>请先登陆</title>
    <style type="text/css">

        body {
            margin: 0;
            padding: 0;
            background-image: url(../img/patings2.jpg);
            background-size: 100% 100%;
        }

        .div {
            width: 400px;
            height: 700px;

            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            overflow: hidden;
        }

        .head-div {
            width: 100px;
            height: 100px;
            border: 1px solid #999;
            border-radius: 50%;
            margin: 0 auto 10px auto;
            background: url(../img/patings.jpg) no-repeat;
            background-size: 100px 100px;
        }

        .sign-div {
            width: 400px;
            height: 585px;
            text-align: center;
            outline: none;
            border: 1px solid rgb(94, 92, 233);
            border-radius: 8px;
            background-color: rgba(172, 235, 243, .2);
            box-sizing: border-box;
        }

        .sign-div h1 {
            margin-bottom: 10px;
            color: rgb(29, 26, 26);
        }

        input {
            width: 250px;
            height: 44px;
            border: none;

            outline: none;

            box-sizing: border-box;
            display: block;
            padding: 0 16px;
        }

        .input-text {
            margin: 5px auto;
            border-radius: 16px;
        }

        .input-text:hover {
            border: 0.5px solid rgb(76, 76, 233);
            transition: 0.5s;
            border-radius: 4px;
        }

        .input-btn {
            margin: 30px auto 20px;
            border-radius: 44px;
            cursor: pointer;
            background-color: rgba(84, 175, 249, 0.8);
        }

        .input-btn:hover {
            color: #fff;
            font-size: 16px;
            border-radius: 4px;
            transition: 0.5s;
            background-color: rgba(10, 138, 243, 0.8);
        }

        .sign-div a {
            text-decoration: none;
            color: rgb(92, 61, 112);
            font-size: 14px;
            padding: 10px;
            transition: 0.8s;
            display: block;
        }

        a:hover {
            color: #FFF;
            background: rgba(0, 0, 0, .3);
            border-radius: 8px;
        }
    </style>

</head>

<body>



<div class="div">
    <div class="head-div"></div>
    <div class="sign-div">
        <form id="loginform"  action="1.html" >
            <h1>登录</h1>
            <input class="input-text" type="text" name="username" id="L_use" placeholder="帐号">
            <input class="input-text" type="password" name="password" id="L_pwd" placeholder="密码">
            <input type="button" class="input-btn" id="login" value="登录">
            <!-- <input class="input-btn" type="submit" value="登录"> -->

            <a href="#" target="_blank">忘记密码?</a>
        </form>
    </div>
</div>
<script type="text/javascript" src="../JS/jQurey.js"></script>
<script type="text/javascript">

    $("#login").click(function(){
        var username=$("#L_use").val();
        var password=$("#L_pwd").val();
        if(isEmply(username)){
            alert("用户名不能为空")
            return;
        }else if(isEmply(password)){
            alert("密码不能为空")
            return;
        }
        $("#loginform").submit();


    })
    function isEmply(str){
        if(str==null||str.trim()){
            return false;
        }
        return true;
    }
</script>


</body>
</html>
